In the Figure,a 4

question 44

Multiple Choice

In the figure,a 4.0-kg ball is on the end of a 1.6-m rope that is fixed at 0.The ball is held at point A,with the rope horizontal,and is given an initial downward velocity.The ball moves through three quarters of a circle with no friction and arrives at B,with the rope barely under tension.The initial velocity of the ball,at point A,is closest to

• A) 4.0 m/s
• B) 5.6 m/s
• C) 6.3 m/s
• D) 6.9 m/s
• E) 7.9 m/s

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Definitions:

Dependent Variables

In experimental and statistical research, the variable being tested and measured, which is expected to change as a result of variations in the independent variable(s).

Independent Variable

A variable in an experiment that is manipulated to observe its effect on the dependent variable.

Investigator

A person who carries out a systematic search or research, especially in order to discover new information or reach a new understanding.